#1B107E#1B107E

#1B107E is a dark, vivid blue. Relative luminance 0.021; OKLCH L 29.5% C 0.169 H 273.2°. Best body text is #FFFFFF at 14.77:1 contrast (WCAG AA passes).

Color values

HEX	#1B107E
RGB	rgb(27, 16, 126)
HSL	hsl(246, 77%, 28%)
HSV	hsv(246, 87%, 49%)
CMYK	cmyk(78.6%, 87.3%, 0%, 50.6%)
CIE-LAB	lab(16.05, 41.40, -58.26)
CIE-LCH	lch(16.05, 71.47, 305.40°)
OKLab	oklab(29.48% 0.0095 -0.1685)
OKLCH	oklch(29.48% 0.169 273.2)
XYZ	xyz(4.4019, 2.1095, 19.9098)
Luminance	0.0211 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B107E #737E10

analogous

#103C7E #1B107E #52107E

triadic

#1B107E #7E1B10 #107E1B

tetradic

#1B107E #7E103C #737E10 #107E52

square

#1B107E #7E103C #737E10 #107E52

split-complementary

#1B107E #7E5210 #3C7E10

monochromatic

#06031B #0F0948 #1B107E #2717B4 #3825E3

Accessibility & contrast

On white

14.77

#1B107E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#1B107E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B107E

14.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B107E	#FFFFFF	#000000	##FFFFFF
##1B107E	1.00	14.77	1.42	14.77
#FFFFFF	14.77	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D81

Deuteranopia (green-blind)

#00237C

Tritanopia (blue-blind)

#003449

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #1b107e;
/* rgb */ color: rgb(27, 16, 126);
/* oklch */ color: oklch(29.5% 0.169 273.2);

Tailwind

colors: {
  custom: {
    50: '#6b53a5',
    500: '#1b107e',
    950: '#000000',
  },
}

SCSS

$custom: #1b107e;
$custom-light: #6b53a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1b107e",
  "rgb": {
    "r": 27,
    "g": 16,
    "b": 126
  },
  "hsl": {
    "h": 246,
    "s": 77.465,
    "l": 27.843
  },
  "oklch": {
    "l": 0.29483,
    "c": 0.16874,
    "h": 273.2
  },
  "luminance": 0.0211
}

Semantic roles & 50–950 ramp

primary

#1B107E

secondary

#A8B436

accent

#F434E1

background

#F7F4FA

surface

#EDE7F4

border

#C8C3CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1B107E

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →